# Which is the Original Number from the Following?

The sum of two digits of a number is 6. If the digits are interchanged, the difference between new number and old number is 18. Which is the original number from the following?

- 60
- 51
- 42
- 15

The sum of two digits of a number is 6. If the digits are interchanged, the difference between new number and old number is 18. Which is the original number from the following?

- 60
- 51
- 42
- 15